Monitoring - Ace Heating Solutions Atlas A050 Operating And Maintenance Manual

Parameter
Method
Detection time
Error threshold
Rate offset
Interstage delay
Parameter
Method
Detection time
Error threshold
Rate offset
Interstage delay

4-34 Monitoring

Monitoring of each boiler on the system is accomplished through the System Status and Detail Status Pages. The Detail
Status Page is shown below.
value to be used instead.
Some rate allocation algorithms may specify the use of
this parameter, and that the slave base load setting are
ignored.
Table 4.26 – Lead Lag Advanced Setting: Rate Allocation Parameters
Error threshold: A stage is added when the error
becomes excessive based on degrees away from
setpoint and time.
Firing rate threshold: Stage is added based on the
firing rate of the last stage.
Disabled
This parameter determines how long criteria need to
persist for add stage to occur.
0 to 234F (-17 to 112C)
Stage is added when the error becomes excessive
based on degrees away from setpoint, and time.
+- %
Stage is added when the request firing rate is above the
base rate by this amount and time.
This parameter specifies the minimum time that the
stager waits before adding a stage.
Table 4.27 – Lead Lag Advanced Setting: Add Stage Parameters
Error threshold: A stage is dropped when the error
becomes excessive based on degrees away from
setpoint and time.
Firing rate threshold: The firing rating based staging; a
stage is dropped based on the firing rate of the last
stage.
This parameter determines how long criteria need to
persist for a drop stage to occur.
0 to 234F (-17 to 112C)
Stage is dropped when the error becomes excessive
based on degrees away from setpoint, and time.
+- %
Stage is dropped when the requested firing rate is below
the minimum firing rate by this amount.
This parameter specifies the minimum time that the
stager waits before dropping a stage.
Table 4.28 – Lead Lag Advanced Setting: Drop Stage Parameters
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